Non-rising handwheel: Free from foreign substance trouble because most threaded surface is covered.
No leakage by two-stage sealing of double bellows and gland packing.
Gland packing does not need retightening nor applying pressure on spindle, thus handwheel can be turned with small torque without interference from the spindle.
Maintenance-free: No need to replace or retighten gland packing.
Armstrong Flow Control is a privately owned Australian company that has been servicing the valve and steam market since 1972.
